A nurse in an emergency department is reviewing a client's ECG reading.
Which of the following findings should the nurse identify as an indication that the client has first-degree heart block?
Prolonged PR intervals.
Nondiscernible P waves.
More P waves than QRS complexes.
No correlation between P and QRS waves.
The Correct Answer is A
First-degree heart block is a type of atrioventricular (AV) block that involves the consistent prolongation of the PR interval (defined as >0.20 seconds) due to delayed conduction via the atrioventricular node.
This is seen on an ECG as a PR interval greater than 200 ms in length.
Choice B: Nondiscernible P waves are not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice C: More P waves than QRS complexes is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice D: No correlation between P and QRS waves is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The nurse should include this intervention in the plan of care because it can help relieve pressure on the reddened areas over the client’s bony prominences and prevent the development of pressure injuries.
Choice A is incorrect because applying an occlusive dressing to intact skin over bony prominences is not an appropriate intervention for preventing pressure injuries.
Choice B is incorrect because turning and repositioning the client every 4 hours may not be frequent enough to prevent the development of pressure injuries.
The client should be turned and repositioned more frequently, at least every 2 hours.
Choice D is incorrect because massaging reddened areas over bony prominences is not recommended as it can cause further damage to the skin and underlying tissues.
Correct Answer is A
Explanation
The nurse should provide the client with a short-handled teacher.
This can help the client to reach and grasp objects without having to overextend or strain their unaffected arm.
Choice B is also correct.
The nurse should place a plate guard on the client’s meal tray.
This can help prevent food from spilling off the plate and make it easier for the client to eat with one hand.
Choice C is wrong because reminding the client to use a cane on his left side while ambulating could be unsafe as the client’s left side is affected by hemiplegia.
Choice D is wrong because positioning the bedside table on the client’s left side could make it difficult for the client to reach items on the table.
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